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Background: Several recent studies have shown that total scores on depressive symptom measures in a general population approximate an exponential pattern except for the lower end of the distribution. Furthermore, we confirmed that the exponential pattern is present for the individual item responses on the Center for Epidemiologic Studies Depression Scale (CES-D). To confirm the reproducibility of such findings, we investigated the total score distribution and item responses of the Kessler Screening Scale for Psychological Distress (K6) in a nationally representative study.
Methods: Data were drawn from the National Survey of Midlife Development in the United States (MIDUS), which comprises four subsamples: (1) a national random digit dialing (RDD) sample, (2) oversamples from five metropolitan areas, (3) siblings of individuals from the RDD sample, and (4) a national RDD sample of twin pairs. K6 items are scored using a 5-point scale: "none of the time," "a little of the time," "some of the time," "most of the time," and "all of the time." The pattern of total score distribution and item responses were analyzed using graphical analysis and exponential regression model.
Results: The total score distributions of the four subsamples exhibited an exponential pattern with similar rate parameters. The item responses of the K6 approximated a linear pattern from "a little of the time" to "all of the time" on log-normal scales, while "none of the time" response was not related to this exponential pattern.
Discussion: The total score distribution and item responses of the K6 showed exponential patterns, consistent with other depressive symptom scales.
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http://dx.doi.org/10.7717/peerj.2987 | DOI Listing |
Epidemiol Psychiatr Sci
September 2025
Unit of Psychiatry, Department of Public Health and Medicinal Administration, Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Taipa, MO, China.
Aims: Loneliness is a common public health concern, particularly among mid- to later-life adults. However, its impact on early mortality (deaths occurring before reaching the oldest old age of 85 years) remains underexplored. This study examined the predictive role of loneliness on early mortality across different age groups using data from the Health and Retirement Study (HRS).
View Article and Find Full Text PDFJ Dermatolog Treat
December 2025
Department of Dermatology, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China.
Background: Ivarmacitinib (SHR0302), a selective Janus kinase-1 inhibitor, is a novel treatment for moderate-to-severe atopic dermatitis (AD).
Objectives: This post hoc analysis evaluated the impact of early itch relief with ivarmacitinib on quality of life (QoL), working productivity, and sleep quality in affected patients.
Methods: Data from ivarmacitinib treatment groups in a phase III trial (NCT04875169) were analyzed.
Nihon Hoshasen Gijutsu Gakkai Zasshi
September 2025
Department of Radiological Technology, Faculty of Medical Science, Kyoto University of Medical Science.
Purpose: Ensuring that patients undergo examinations with confidence and ease is crucial. This study aims to develop a reliable and valid CT Scan Attitude Scale (CT-SAS) to measure attitudes toward CT scans objectively.
Methods: In Study 1, question items were developed based on preliminary surveys and prior research.
J Safety Res
September 2025
Department of Human Resource Management & Employment Relations, King's Business School, King's College London, London WC2B 4BG, United Kingdom; Department of Medical Research, China Medical University Hospital, China Medical University, Taiwan 404 Taichung Taiwan.
Introduction: This study aims to develop and validate a job crafting scale designed specifically for occupational health and safety (OHS) professionals working in a crisis environment. Job crafting, defined as the proactive adjustment of job roles to better align with individual preferences and strengths, is recognized as a valuable strategy for enhancing job satisfaction, engagement, and performance in various occupational settings. However, existing job crafting scales primarily focus on general work contexts and cannot fully capture the unique dimensions of job crafting relevant to OHS professionals in a crisis response context.
View Article and Find Full Text PDFInt J Psychophysiol
September 2025
National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, 277-0882, Japan. Electronic address:
The autonomic-based Concealed Information Test (CIT) focuses on differential responses to a crime-relevant item that is significant only for knowledgeable persons. This study examined whether pre-test instructions on question themes defining knowledgeable and unknowledgeable contexts modulate the magnitude of differential responses to the relevant item. The participants (36 men 46 women) were instructed to steal one item from one of two possible locations in a mock theft task.
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